"We love you nan!" she began her sweet post.
"You were one of the strongest women I knew, right until the end. You lived a full life for over 90 years and will be missed dearly. Rest In Peace❤️ (I have many photos but this one's my fave, it shows nan’s cheeky spirit!✨)
Fans were quick to share kind messages of support to the star.
Sending condolences to Jennifer and her family during this difficult time.